Vulnerability Assessment of Guarani Aquifer Using PESTICIDE-DRASTIC-LU Model: Insights from Brotas Municipality, Brazil

Autor(es)

Guerrero, Joao Vitor ; Gomes, Alberto ; Lorandi, Reinaldo ; Di Lollo, Jose Augusto ; Mataveli, Guilherme ; Moschini, Luiz Eduardo

• Tipo de documento: Artigo Científico
• Fonte: WATER; v. 16, n. 12, p. 18-pg., 2024-06-01.

Resumo

Free aquifers have become an important water supply option for underdeveloped and developing countries, due to the resource quality and relatively low extraction prices. However, overexploitation and the lack of territorial planning guidelines in these areas endanger groundwater availability and quality. In this context, this study aimed to analyze the vulnerability to groundwater contamination and contribute to the conservation of the ecosystem services, provided by the Guarani aquifer in Brotas, Brazil, by applying the PESTICIDE-DRASTIC-LU model. The application of this model allowed the identification of priority conservation areas within the context of ecosystem services that groundwater provides to local inhabitants. To this end, we collected, treated, and analyzed seven different hydrogeological data to understand the environmental dynamics of the system and to identify which areas are most vulnerable to aquifer contamination. The results pointed out that 64% of the study area presents zones of high and very high vulnerability to contamination, due to the local hydrogeological characteristics (sandy soils and rocks) and the various anthropogenic activities, mainly with large plantations of sugar cane and eucalyptus. In addition, the mapping allowed the spatial demonstration of the places that should be considered a priority for the conservation of ecosystem services provided by local groundwater. Thus, our results can serve as a baseline to define public action strategies for the preservation and sustainable management of the Guarani aquifer areas. (AU)

• Processo FAPESP: 23/03206-0 - Aprimoramento da estimativa das emissões associadas à queima de biomassa através da atualização dos fatores de emissão
• Beneficiário: Guilherme Augusto Verola Mataveli
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 16/19020-0 - Zoneamento geoambiental voltado para o desenvolvimento regional sustentável e ao ecoturismo do município de Brotas, SP
• Beneficiário: João Vitor Roque Guerrero
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 19/25701-8 - Influência do uso e cobertura da terra na emissão de material particulado fino (PM2,5µm) por queimadas nos biomas Amazônia e Cerrado integrando modelagem e sensoriamento remoto
• Beneficiário: Guilherme Augusto Verola Mataveli
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado